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// Copyright 2023 The Dawn & Tint Authors
//
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// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
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// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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#include "gmock/gmock.h"
#include "src/tint/lang/core/constant/scalar.h"
#include "src/tint/lang/wgsl/ast/case_selector.h"
#include "src/tint/lang/wgsl/ast/int_literal_expression.h"
#include "src/tint/lang/wgsl/helpers/ir_program_test.h"
namespace tint::wgsl::reader {
namespace {
using namespace tint::core::number_suffixes; // NOLINT
using ProgramToIRLetTest = helpers::IRProgramTest;
TEST_F(ProgramToIRLetTest, Constant) {
WrapInFunction(Let("a", Expr(42_i)));
auto m = Build();
ASSERT_EQ(m, Success);
EXPECT_EQ(Disassemble(m.Get()),
R"(%test_function = @compute @workgroup_size(1, 1, 1) func():void -> %b1 {
%b1 = block {
%a:i32 = let 42i
ret
}
}
)");
}
TEST_F(ProgramToIRLetTest, BinaryOp) {
WrapInFunction(Let("a", Add(1_i, 2_i)));
auto m = Build();
ASSERT_EQ(m, Success);
EXPECT_EQ(Disassemble(m.Get()),
R"(%test_function = @compute @workgroup_size(1, 1, 1) func():void -> %b1 {
%b1 = block {
%a:i32 = let 3i
ret
}
}
)");
}
TEST_F(ProgramToIRLetTest, Chain) {
WrapInFunction(Let("a", Expr(1_i)), //
Let("b", Expr("a")), //
Let("c", Expr("b")));
auto m = Build();
ASSERT_EQ(m, Success);
EXPECT_EQ(Disassemble(m.Get()),
R"(%test_function = @compute @workgroup_size(1, 1, 1) func():void -> %b1 {
%b1 = block {
%a:i32 = let 1i
%b:i32 = let %a
%c:i32 = let %b
ret
}
}
)");
}
} // namespace
} // namespace tint::wgsl::reader